Timothy J. Thurman

University of Montana

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W. Owen McMillan

Smithsonian Tropical Research Institute

Lauren K. Neel

Arizona State University

Albert K. Chung

University of Hong Kong

John David Curlis

Georgia Southern University

Madeline Dubois

The Land Institute

Zachariah Degon

University of Central Arkansas

Christian L. Cox

Georgia Southern University

Michael L. Logan

Smithsonian Tropical Research Institute

Edita Folfas

The University of Texas at Arlington

Rowan D. H. Barrett

McGill University

Cooperative Institutions

Smithsonian Tropical Research Institute

University of Arkansas for Medical Sciences

Arkansas Children's Hospital

McGill University

John Wiley & Sons (United States)

Georgia Southern University

University of California, Los Angeles

University of Montana

University of Arkansas at Little Rock

Princeton University

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Table S2. from Ectoparasite extinction in simplified lizard assemblages during experimental island invasion

Figshare (2020)

Christian L. Cox Sean Alexander Brianna Casement Albert K. Chung John David Curlis

Initial and recaptured mite abundance for twelve founding individuals that were recaptured the following year.

Table (database)

Extinction (optical mineralogy)

10.6084/m9.figshare.12753152

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Citations (0)

Using seasonal genomic changes to understand historical adaptation: parallel selection on stickleback in highly-variable estuaries

bioRxiv (Cold Spring Harbor Laboratory) (2020)

Alan Garcia‐Elfring Antoine Paccard Timothy J. Thurman Ben A. Wasserman Eric P. Palkovacs

Abstract Parallel evolution is considered strong evidence for natural selection. However, few studies have investigated the process of parallel selection as it plays out in real time. The common approach is to study historical signatures of selection in populations already well adapted to different environments. Here, to document selection in action under natural conditions, we study six populations of threespine stickleback ( Gasterosteus aculeatus ) inhabiting bar-built estuaries that undergo seasonal cycles of environmental changes. Estuaries are periodically isolated from the ocean due to sandbar formation during dry summer months, with concurrent environmental shifts that resemble the long-term changes associated with postglacial colonization of freshwater habitats by marine populations. We used pooled whole-genome sequencing (Pool-WGS) to track seasonal allele frequency changes in these populations and search for signatures of natural selection. We found consistent changes in allele frequency across estuaries, suggesting a potential role for parallel selection. Functional enrichment among candidate genes included transmembrane ion transport and calcium binding, which are important for osmoregulation and ion balance. The genomic changes that occur in threespine stickleback from bar-built estuaries could provide a glimpse into the early stages of adaptation that have occurred in many historical marine to freshwater transitions.

Parallel evolution

10.1101/2020.11.24.396291

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proteoDA: a package for quantitative proteomics

The Journal of Open Source Software (2023)

Timothy J. Thurman Charity L. Washam Duah Alkam Jordan T. Bird Allen Gies

proteoDA is an R package designed to analyze high resolution intensity-based mass spectrometry data.proteoDA was designed to be streamlined and user-friendly.proteoDA is built around a DAList, a custom R class, which is used to hold the data, statistical design, and results for a differential abundance analysis.Users import protein abundance data, protein annotation data, and sample metadata into a DAList, and all further functions operate on that list.Once the data are in DAList, proteoDA provides functions for further steps of the analysis Figure 1.

10.21105/joss.05184

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Citations (17)

Facultative pupal mating in Heliconius erato: Implications for mate choice, female preference, and speciation

Ecology and Evolution (2018)

Timothy J. Thurman Emily G. Brodie Elizabeth Evans W. Owen McMillan

Mating systems have broad impacts on how sexual selection and mate choice operate within a species, but studies of mating behavior in the laboratory may not reflect how these processes occur in the wild. Here, we examined the mating behavior of the neotropical butterfly Heliconius erato in the field by releasing larvae and virgin females and observing how they mated. H. erato is considered a pupal-mating species (i.e., males mate with females as they emerge from the pupal case). However, we observed only two teneral mating events, and experimentally released virgins were almost all mated upon recapture. Our study confirms the presence of some pupal-mating behavior in H. erato, but suggests that adult mating is likely the prevalent mating strategy in this species. These findings have important implications for the role of color pattern and female mate choice in the generation of reproductive isolation in this diverse genus.

Heliconius

Facultative

Reproductive isolation

Mating preferences

10.1002/ece3.3624

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Citations (18)

Visual mate preference evolution during butterfly speciation is linked to neural processing genes

Nature Communications (2020)

Matteo Rossi Alexander E. Hausmann Timothy J. Thurman Stephen H. Montgomery Riccardo Papa

Abstract Many animal species remain separate not because their individuals fail to produce viable hybrids but because they “choose” not to mate. However, we still know very little of the genetic mechanisms underlying changes in these mate preference behaviours. Heliconius butterflies display bright warning patterns, which they also use to recognize conspecifics. Here, we couple QTL for divergence in visual preference behaviours with population genomic and gene expression analyses of neural tissue (central brain, optic lobes and ommatidia) across development in two sympatric Heliconius species. Within a region containing 200 genes, we identify five genes that are strongly associated with divergent visual preferences. Three of these have previously been implicated in key components of neural signalling (specifically an ionotropic glutamate receptor and two regucalcins ), and overall our candidates suggest shifts in behaviour involve changes in visual integration or processing. This would allow preference evolution without altering perception of the wider environment.

Heliconius

10.1038/s41467-020-18609-z

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Citations (28)

The Epigenetic Signature of Colonizing New Environments in Anolis Lizards

Molecular Biology and Evolution (2019)

Juntao Hu Arash M Askary Timothy J. Thurman Dave A Spiller Todd M. Palmer

Anolis

Signature (topology)

10.1093/molbev/msz219

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Citations (1)

Visual mate preference evolution during butterfly speciation is linked to neural processing genes

bioRxiv (Cold Spring Harbor Laboratory) (2020)

Matteo Rossi Alexander E. Hausmann Timothy J. Thurman Stephen H. Montgomery Riccardo Papa

Many animal species remain separate not because they fail to produce viable hybrids, but because their individuals “choose” not to mate. However, we still know very little of the genetic mechanisms underlying changes in these mate preference behaviours. Heliconius butterflies display bright warning patterns, which they also use to recognize conspecifics. Here, we couple QTL for divergence in visual preference behaviours with population genomic and gene expression analyses of neural tissue (central brain, optic lobes and ommatidia) across development in two sympatric Heliconius species. Within a region containing 200 genes, we identify five genes that are strongly associated with divergent visual preferences. Three of these have previously been implicated in key components of neural signalling (specifically an ionotropic glutamate receptor and two regucalcins ), and overall our candidates suggest shifts in behaviour involve changes in visual integration or processing. This would allow preference evolution without altering perception of the wider environment.

Heliconius

10.1101/2020.03.22.002121

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Citations (6)

Table S1. from Ectoparasite extinction in simplified lizard assemblages during experimental island invasion

Figshare (2020)

Christian L. Cox Sean Alexander Brianna Casement Albert K. Chung John David Curlis

Mite abundance, intensity, and prevalence for each individual for this study. For generation, F0=founding individuals, F1=offspring of generation P, and F2=offspring of generation F1. For sex, M=male and F=female.

Table (database)

Extinction (optical mineralogy)

10.6084/m9.figshare.12753155

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Ectoparasite extinction in simplified lizard assemblages during experimental island invasion

Biology Letters (2020)

Christian L. Cox Sean Alexander Brianna Casement Albert K. Chung John David Curlis

Introduced species can become invasive, damaging ecosystems and disrupting economies through explosive population growth. One mechanism underlying population expansion in invasive populations is ‘enemy release’, whereby the invader experiences relaxation of agonistic interactions with other species, including parasites. However, direct observational evidence of release from parasitism during invasion is rare. We mimicked the early stages of invasion by experimentally translocating populations of mite-parasitized slender anole lizards ( Anolis apletophallus ) to islands that varied in the number of native anoles. Two islands were anole-free prior to the introduction, whereas a third island had a resident population of Gaige's anole ( Anolis gaigei ). We then characterized changes in trombiculid mite parasitism over multiple generations post-introduction. We found that mites rapidly went extinct on one-species islands, but that lizards introduced to the two-species island retained mites. After three generations, the two-species island had the highest total density and biomass of lizards, but the lowest density of the introduced species, implying that the ‘invasion’ had been less successful. This field-transplant study suggests that native species can be ‘enemy reservoirs’ that facilitate co-colonization of ectoparasites with the invasive host. Broadly, these results indicate that the presence of intact and diverse native communities may help to curb invasiveness.

Anolis

Ecological release

Extinction (optical mineralogy)

Population density

10.1098/rsbl.2020.0474

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Citations (8)

Visual mate preference evolution during butterfly speciation is linked to neural processing genes.

Matteo Rossi Alexander E. Hausmann Timothy J. Thurman Stephen H. Montgomery Riccardo Papa

Many animal species remain separate not because their individuals fail to produce viable hybrids but because they choose not to mate. However, we still know very little of the genetic mechanisms underlying changes in these mate preference behaviours. Heliconius butterflies display bright warning patterns, which they also use to recognize conspecifics. Here, we couple QTL for divergence in visual preference behaviours with population genomic and gene expression analyses of neural tissue (central brain, optic lobes and ommatidia) across development in two sympatric Heliconius species. Within a region containing 200 genes, we identify five genes that are strongly associated with divergent visual preferences. Three of these have previously been implicated in key components of neural signalling (specifically an ionotropic glutamate receptor and two regucalcins), and overall our candidates suggest shifts in behaviour involve changes in visual integration or processing. This would allow preference evolution without altering perception of the wider environment.

Heliconius

10.17863/cam.58993

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Citations (1)